157626197 has 4 divisors (see below), whose sum is σ = 157720140. Its totient is φ = 157532256.

The previous prime is 157626191. The next prime is 157626233. The reversal of 157626197 is 791626751.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26615281 + 131010916 = 5159^2 + 11446^2 .

It is a cyclic number.

It is not a de Polignac number, because 157626197 - 2²² = 153431893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157626191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44408 + ... + 47825.

It is an arithmetic number, because the mean of its divisors is an integer number (39430035).

Almost surely, 2^157626197 is an apocalyptic number.

It is an amenable number.

157626197 is a deficient number, since it is larger than the sum of its proper divisors (93943).

157626197 is an equidigital number, since it uses as much as digits as its factorization.

157626197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93942.

The product of its digits is 158760, while the sum is 44.

The square root of 157626197 is about 12554.9272001075. The cubic root of 157626197 is about 540.1853467548.

The spelling of 157626197 in words is "one hundred fifty-seven million, six hundred twenty-six thousand, one hundred ninety-seven".